how to make mesh faces look smooth?
Right click to access to Object Context Menu and Shade Smooth (or header menu &gt; Object &gt; Shade Smooth). You can change the angle threshold of smoothness in the Properties panel &gt; Object Data &gt; Normals &gt; Auto Smooth. But the whole shape will still look angulous on its borders, if you need to round it for real you need to give it a Subdivision Surface modifier (and apply it if you want to import into a game engine).